Schlubby seductress Brooke Hundley today was fired from her job at ESPN – less than a day after her former married lover, baseball analyst Steve Phillips, was canned by the sports network for their tawdry trysts.

Phillips, at the same time, entered a rehab facility to be treated for what his agent, Steve Lefkowitz, confirmed was “sexual addiction.”

Lefkowitz said, “He wants to keep his four boys and his wife. He doesn’t want to lose them.”

ESPN spokesman Josh Krulewitz confirmed that the firing of the 22-year-old Hundley, a production assistant, was effective today.

Hundley had been suspected by cops of using ESPN computers to create phony online identities that were used to cyberstalk Phillips’ teenage son after their affair ended.

Both Hundley and Phillips had been on “leave” from ESPN after the The Post exclusively last Wednesday revealed that the ex-Mets GM and serial philanderer had a brief affair with Hundley after meeting her for the first time while on assignment in St. Louis in July.

Phillips, 46, decided to enter treatment because he “knew this had to be taken care of,” Lefkowitz said.

He added, “He’s just trying to get his family unit back together… He wants to do right by his family because he doesn’t want to lose them.”

The agent said Phillips was looking to enter a facility last week, and Lefkowitz said that effort had nothing to do with Phillips trying to save his job at ESPN.

“We’re not doing this to see if we can get his job back,” he said. “He was proactive because he knows he has a problem… We’ve been working on this for weeks. It got to the point where he really needs help, and this was the best way to do it,” the agent said. “He’s going in for an illness.”

Lefkowitz noted that in 1998 Phillips, while Mets GM, had said he was going to get counseling after admitting to extramarital affairs with multiple women.

“He went to try and take care of the problem, but the problem is, he fell off the wagon,” Lefkowitz said. “What he’s doing is primarily to fix the family situation. He’s got four boys that he doesn’t want to leave, and he does want to solve this problem.”

For her part, Hundley allegedly developed a “Fatal Attraction”-like obsession with Phillips after he told her he no longer wanted to have sex with her this past summer.

In August, the tubby temptress hired a woman through a Craiglist ad to call Phillips’ wife, Marni, and tell her that the silver-haired Phillips was cheating with a co-worker.

In mid-August, Hundley allegedly went to the Phillips family home in Wilton, Conn., and dropped off a letter for Marni. Hundley, according a police report, fled the property in her car, hitting a stone post on the way out, when Marni showed up with her 7-year-old son.

The letter she left behind, which is contained in a police file, taunts Marni about her husband’s affair with Hundley, while feigning concern for the betrayed wife. The letter also brags about how Hundley had sex with Phillips, and claims that she cares about him.

But a day later – after getting spotted dropping off that sick missive – Hundley filed a restraining order against Phillips that claimed he had pressured her into sex after giving her booze, that he referred to her as the office slut, and threatened to get her fired if she told his wife about their dalliance.

Hundley last month abandoned a court case to keep that restraining order in effect after lawyers for her and Phillips told a Connecticut judge that they were seeing to reach an out-of-court settlement of their issues.

It is not known if such a deal was reached, or what its terms were.

Marni Phillips filed for divorce from Steven in early September, shortly after he deeded over title to her house.

In 1998, while serving as Mets general manager, Phillips went on an eight-day leave of absence and began counseling after admitting to having extramarital sex with multiple women, among them a Mets employee who sued him for sexual harassment. That lawsuit later was settled out of court.